Home Internet Access According to a study, 78% of adults ages 18-29 years had broadband Internet access at home in 2011. A researcher wanted to estimate the proportion of undergraduate college students (18-23 years) with access, so she randomly sampled 181 undergraduates and found that 158 ha access. Estimate the true proportion with 95% confidence. Use a graphing calculator and round the answers to at least three decimal places.